MEASUREMENT OF ANODIC OVERVOLTAGE BY A MODIFIED CURRENT INTERRUPTION METHOD IN CRYOLITE-ALUMINA MELTS

来源期刊：中国有色金属学报(英文版)1999年第1期

论文作者：Yang Jianhong Lai Yanqing Xiao Jin Li Jie Liu Yexiang J . Thonstad

文章页码：121 - 128

Key words：anodic overvoltage;　current interruption method;　aluminium electrolysis

Abstract: Generally, there are reasons to believe that the experimental technique has been inadequate in some works on anodic overvoltage measurements in aluminium electrolysis, therefore, the overvoltage data are not quite correct. Several causes affecting the precision of measurements were analyzed, a cell configuration (vertical carbon anodes, insulated bottom and inner wall of graphite crucible as cathode) was used for overvoltage studies. An improved current interruption technique was used with current interrupted in less than 2μs and a simulation was applied to the oscillating potential decay curve.